ATTENTION: There is a typo in the file AUTOEXEC.BAT, which can result in data loss on your HDD, when using boot option 4 ("Ausgang zu MS-DOS"). To fix that, in line 21 change from MIMIMUM to MINIMUMtwo times.
I also recommend to change CONFIG.SYS line 87 from SWITCHES=/N to SWITCHES=/F. -- "/N" disabled skipping CONFIG.SYS & AUTOEXEC.BAT on boot. "/F" removes the two-second delay on boot.